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Innovation in Combustion Engines

A special issue of Energies (ISSN 1996-1073). This special issue belongs to the section "I2: Energy and Combustion Science".

Deadline for manuscript submissions: closed (25 April 2024) | Viewed by 748

Special Issue Editors


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Guest Editor
Department of Engineering, University of Perugia, 06125 Perugia, Italy
Interests: computational fluid dynamics (CFD); sprays; internal combustion engines; carbon-neutral fuels; hydrogen and ammonia; ignition and combustion stability

E-Mail Website
Guest Editor
Department of Engineering, University of Perugia, 06123 Perugia, Italy
Interests: computational fluid dynamics (CFD); sprays; multiphase flows; internal combustion engines; fuels
Special Issues, Collections and Topics in MDPI journals

E-Mail Website
Guest Editor
Department of Engineering, University of Perugia, 06125 Perugia, Italy
Interests: internal combustion engines; vehicle emissions; fluid dynamics

Special Issue Information

Dear Colleagues,

Over the last few decades, the internal combustion engine (ICE) scientific community and manufacturers have been investing large amount of resources in research to reduce emission levels and increase thermal efficiency of internal combustion engines. Competing technologies will contribute to pushing the boundaries of all available pathways, considering the fact that even the more optimistic scenarios for decarbonizing the transportation sector still foresee the dominance of energy worldwide coming from liquid fuels up to 2040. In this context, reducing the pollutants and CO2 emissions of ICEs is even more urgent and needed, because their relatively cheap but sophisticated technology will have a wide impact. Promising and advanced technological solutions have been suggested and explored to improve efficiency by 10-20% and reach clean and efficient combustion in internal combustion engines.

In this context, the carbon-neutral mobility strategy must be coupled with innovation in the design of more energy-efficient engines. The optimization of ICEs is still essential for future transportation and sustainable mobility, as they can help support the smooth transition to electric vehicles.

This Special Issue aims to present and disseminate the most recent advances related to the modeling, application, control, and optimization of all types of internal combustion engines.

Topics of interest for publication include, but are not limited to:

  • Experimental and CFD activities on internal combustion engines;
  • Fuel injection and combustion development using innovative fuels, such as carbon-neutral fuels (hydrogen, ammonia, etc.), E-fuels, and bio-fuels;
  • Innovative ignition systems for improving combustion stability under lean and ultra-lean operation;
  • Low-temperature combustion, and lean and clean combustion strategies for reduction of pollutant emissions;
  • Activities from interdisciplinary fields which are relevant to the innovation in internal combustion engine technologies for future transportation.

Dr. Jacopo Zembi
Prof. Dr. Michele Battistoni
Prof. Dr. Carlo Nazareno Grimaldi
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Energies is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • sustainable mobility
  • CFD modeling of internal combustion engines
  • lean and clean combustion
  • low-temperature combustion
  • fuel injection
  • carbon-neutral fuels
  • hydrogen and ammonia for ICEs
  • E-fuels and bio-fuels
  • innovative ignition systems
  • combustion stability
  • optimization of fuel consumption
  • pollutant emission reduction
  • engine calibration and optimization
  • hybrid powertrains

Published Papers (1 paper)

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Research

14 pages, 3127 KiB  
Article
The Synergy between Methanol M100 and Plasma-Assisted Ignition System PAI to Achieve Increasingly Leaner Mixtures in a Single-Cylinder Engine
by Federico Ricci, Francesco Mariani, Stefano Papi, Jacopo Zembi, Michele Battistoni and Carlo Nazareno Grimaldi
Energies 2024, 17(7), 1659; https://doi.org/10.3390/en17071659 - 30 Mar 2024
Viewed by 433
Abstract
Currently, conventional spark–ignition engines face challenges in meeting the ever-growing demands of customers and increasingly stringent regulations regarding pollutant emissions. A combination of innovative strategies and carbon-neutral fuels is deemed necessary in order to further reduce fuel consumption and minimize engine emissions. The [...] Read more.
Currently, conventional spark–ignition engines face challenges in meeting the ever-growing demands of customers and increasingly stringent regulations regarding pollutant emissions. A combination of innovative strategies and carbon-neutral fuels is deemed necessary in order to further reduce fuel consumption and minimize engine emissions. The present work aims to assess the performance of combustion strategies using low-carbon-content fuel, such as methanol M100, ignited by a plasma-assisted igniter (PAI) under ultra-lean conditions. The experimental campaign is conducted on a single-cylinder research engine at 1000 rpm and low loads, moving up to the engine lean stable limits. The specific purpose of this work is to determine the benefits brought by the proposed strategy, referred to as M100–PAI, which compared market gasoline E5 ignited by the PAI system and conventional spark. The synergy between M100 (methanol) and Plasma-Assisted Ignition (PAI) in internal combustion engines yielded notable benefits. This combination significantly improved combustion stability if compared to the other combinations tested, by extending the lean stable limit to λ = 2.0, reducing cycle-to-cycle variability, and facilitating faster flame front acceleration, resulting in enhanced homogeneity. These enhancements, obtained with the combination M100–PAI, contributed to higher fuel efficiency, showing a 10% efficiency gain over the combination E5–gasoline spark ignition. The findings highlight the potential of innovative combustion strategies using low-carbon fuels and advanced ignition systems to meet stringent emissions regulations while improving engine performance. Full article
(This article belongs to the Special Issue Innovation in Combustion Engines)
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